Dissertation > Transportation > Road transport > Automotive Engineering > Car theory > Car ride and comfort

Simulation Analysis and Improvement of Car Ride Based on Virtual Prototype

Author WangAnZhu
Tutor ZhuZhongKui
School Suzhou University
Course Mechanical and Electronic Engineering
Keywords Ride comfort Virtual Prototyping Multibody system dynamics Air suspension Car
CLC U461.4
Type Master's thesis
Year 2011
Downloads 47
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NVH (Noise, Vibration, Harshness) is a comprehensive index to reflect the dynamic characteristics of the car . Vehicle ride comfort the automotive NVH performance evaluation , which focuses on the uncomfortable feeling of the occupant to solve the vibration in the NHV . For a car needs to further improve its ride requirements by using the ADAMS / Car virtual prototyping and simulation for the ride analysis road model ; simulation is carried out in accordance with the relevant standards , and the results were analyzed and evaluated on this basis a viable solution to improve ride comfort . First of all , on the basis of summing up the national standards of the international standard ISO2631 and our ride evaluation to determine the comprehensive evaluation index for the ride analysis of this article , including comfort parameters , the suspension dynamic travel and tire dynamic load . Secondly , the use of ADAMS / Car to establish a car for simulation analysis and virtual prototyping . To enable the establishment of a virtual prototype of the dynamic characteristics of the maximum extent close to the physical prototype , the key parameters been re-set , in particular resilient element characteristic curve and the characteristic curve of the shock absorber damping front and rear suspension , and the wheel alignment parameters, etc. . Static balance simulation verify the correctness of the model . Furthermore , different speed , the the ride simulation tests under different road underbody seat at three axial vibration acceleration and suspension dynamic travel and tire load , and calculated the value of weighted acceleration rms get the final evaluation the ride of three parameters value . The results obtained were compared with the relevant standards , to arrive at the conclusion of the ride merits . Finally , from the suspension parameters match starting , raised ride improved a variety of programs , and to analyze the feasibility of the various programs . In summary , this study identified a ride analysis of vehicles based on virtual prototyping technology evaluation methods , evaluation through simulation of the car ride , and then explored ride improvement program . The evaluation findings show that : the car in low speed ride better high speed could be improved , which is consistent with the actual situation ; research results show that the improved scheme can significantly improve vehicle ride comfort with air suspension .

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